Corner-clamp for securing glass plates together.



No. 754,245. -PATENTED MAR. 8, 1904.

H. SGHIBLKB.

CORNER CLAMP FOR SEGURING GLASS PLATES TOGETHBR. A

" y ArLIoATIoN FILED AUG. s, 1903.

No MODEL.

@l c www Y Q, nl

wlrrNessfs:

mronngns plates meet.

Patented March s, 1904.

PATENT OFFICE.

HERMAN SCHIELKE, OF CLEVELAND, OHIO.

CQRNERQQLAMP Fon SEcunlNe. GLASS PLATES TOGETHER.

SPECIFICATION forming part-of Letters Patent No. 754,245, dated March 8, 1904.

' Application filed August 8, 1903| Y Same.

This invention relates to corner-clamps for securing together plates'of glass inthe formation of showcases or show-windows.

The object of this invention is to provide a clamp of this kind which will brace the plates at their intersecting angles or corners land Ahaving such an arrangement of parts that it will hold the plates against ordinary strain, but when the plates are subjected to extraordinary strain, such as might be caused by the settling of the building, casing, or any foundation upon which the plates are supported, then the clamping device will yield and allow the plates to adjust themselves to the changed condition.

My invention therefore consists in the features of construction and combination of parts, as hereinfter described in the specification, pointed out in the claims, and illustrated in drawings.

In the accompanying drawings, Figure 1 is an exterior View of a portion of a show-front, showing one of my clamping devices in position. Fig. 2 is a horizontal section on line 2 2, Fig. 1. Fig. 8 isa section on Vline 3 3, Fig. 2. Fig. 4 is a View of one arm of a clamp, showing amoditied form thereof. Fig. 5 is a section on line 5 5, Fig. 3.

Again referring to the drawings, t and t designate two upright glass plates of a showwindow, show-case, or similar construction that are arranged at an angle to each other and are tightly fitted together. The meeting or adjacent edges of said plates are ground and polished, and the edges may be straight or beveled, according to the angle at which the c represents an angle-plate which is arranged to fit on the inside of the teeth c2. v -ends of the metallic strips f and'are arranged other causes.

Serial No. 168,780. (No niodel.)

glass plates. In each arm of the angle-plates c is formed a longitudinal slot or opening project into the slot c. The edges ofthe slot c on the face of the angle-plate next to the glass are depressed or recessed, as at c3, so as to form a small space between the glass and the teeth. YThe locking devices for securing the clamp to the plates comprise two members-#the member e, which is provided with a screw-threadedshank portion e', and the member d, in the shank portion of which is formed a screw-threaded bore d', arranged j to receive the shank e.

The locking devices c The sides of each opening or slot c are l corrugated or serrated to form teeth c2, which are passed through the slots in the arms of the angle-plates and through bolt-holes g, formed in the glass plates. A iiat stripof Ispring-steel or similar material f is bent or doubled around the locking device in each slot, and its endsare arranged to engage with the Ears or lugs f are formed at the to travel in the recess c between the teeth c2 and the glass and serve to hold the said strip f in the slot c.

In Fig. 4 is shown a modified form in which only one side of the slot c' is corrugated and only one end of the resilient strip f engages with the teeth c2.

The operation of my clamping deviceis as follows: After the plates have been set in position one of the plates will often sink at one side, owing to the settling of the building or posed of rigid members the uneven strain causes a fracture of one or both of the glass plates in the vicinity of the clamp. In the case of my device when such a strain comes upon the glass plates one or both of the strips f will yield and move along the teeth until the strain' is equalized and the plates have ad- Now when the clamp is com justed themselves; but the plates will still be v locked as firm as they were originally-that is, as firm as they were before they shifted.

What I claim is l. In a corner-clamp for glass plates, the combination with the glass plates of an angleplate adapted to fit the angle formed by said glass plates, each arm of said angle-plate hav- 4ing a longitudinal slot formed therein, teeth arjranged to project into the slet in each arm, a. bolt passing through the Aslot in each arm and through a bolt-hole formed in the glass plate adjacent thereto and a strip of resilient material doubled around said bolt and having its" ing a longitudinal slot formed therein, teeth arranged to project into the slot' in each arm, a bolt passing through the slot in each arm and through a bolt-hole formed in -the glass plate adjacent thereto, a strip of resilient material doubled around lsaid bolt and having its ends arranged' 'to engage the teethin said slot and means for holding the -ends of- Said strip of resilient material in engagement .with the teeth, substantially as describedand. for the purpose set forth.` 4-

3. In a corner-clamp for. glass plates, the 'combination with lthe glass plates of an anglepla'te adapted to fit the angle'formed by said glass plates, eacharm of said angle-plate having a longitudinal slot formed therein and a recess formed in its face next to the glassplate, a holt passing through each slot in each arm and through a bolt-hole formed in the glass plates adjacent 'thereto anda metallic strip ar- 'ranged in said slot and forming a yielding connection between thev angle-plate and the bolt therein, said strip being provided'with an'ear arranged 'to extend into the aforementioned recess. v

4. In a corner-clamp for glass plates, the combination with the glass-plates, of an angleplate adapted to- -t the angle formed by saidI glass plates, each arm of said angle-plate having a longitudinal slot formed therein, teeth arranged to project into the slot in each arm, a-

bolt passing through the slot in each arm and through a bolt-hole `formed inthe glass plate adjacent thereto, and a strip of resilient mate-l rial secured tosaid bolt and: arranged to engage with the Vteeth formed in said-slot. l 5. A corner-clamp for glass'plates comprisin said slots 'and engaging with thewalls of said slots andwith said bolts so as to form -a yielding connection between said bolts and said angle-plate.

so ing an-angle-plate having a 4longitudinal slot formed, in each arm, bolts arranged to move freely in said slots and flexible-'strips arranged 1 6.1' A corner-clamp for glass plates comprisl llng an angle-platehaving a longitudinal slot 5 formed in each arm, teeth arranged to project -in the respective slots, a bolt arranged to move freely in each of said slots, and a flexible strip arranged in each slot and vforming a yielding connection between said teeth and the bolt therein;

In testimony' whereof I sign the foregoing specification, in the presence of two witnesses, 

